My teachers did not attach a school logo or anything to the word doc. Am I good?
No you are not. Without the school letterhead and stamps anyone could have written the letter. If the letter is being emailed to the school, it should come from the teacher’s official department of education email address
Some teachers use space on the Common App Teacher Evaluation form. Some make the letter separate. Yes, it needs to be recognized as official.
This student is apparently international.